Roller-bearing.



.1 UNITED STATES PATENT OFFICE.

ELLSWORTH I. EDWARDS, OF LOS ANGELES, CALIFORNIA.

ROLLER-BEARD G.

Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed October 24,1906. Serial No. 340,305.

To all it may Be it known that I, ELLBWORTH J. Enwsnns, a citizen of theUnited States, and a resident of Los Angeles,

in the county of L Angeles and sea; of California,

.have invented a new and Improved Roller-Bearing, of

which the following is a full, clear, and exact description.

This invention relates to certain improvements in roller bearings andmore particularly to the means for supporting the rollers within thebearing them in alinement at all. times.

The object of the invention is to provide a supporting means for therollers whereby the contact of the ends and keeping a of the rollerwiththe shoulders of the bearing surfaces may be free and-unrestricted, theframe being so constructed that it occupies a; position adjacent thebearing surface but on the opposite side of the center of the roller.

In the manufacture of roller bearings the great difficulty whichmanufacturers have been unable to succ essfully overcome has been theproducing of a hearing which would carry the weight with a rollingmotion and carry the end thrust when on an incline with the same set ofrollers and yet provide a means for separating and for guiding therollers parallel with the journal.

Various different frames and racks for carrying therollers have beenconstructed or suggested, but all have been open to serious objection.Flat washers at each end of the rollers forming journal boxes, have beenemployed, and these washers have been rigidly joined together by aseries of connecting rods., To make this frame sufficiently rigid it hasbeen necessary to make the washers so wide that it left very littlespace between the washer and the boxing and bushing. To

overcome this, tapered rollers, collarsand boxes have been employed, therollers being provided with grooves and the collars provided withshoulders. In this construction when carrying a heavy end thrust, thebones wedge the rollers'and prevent their rolling. The

wedge shape of the rollers constantly tends to force them out frombetween the boxing and collars, resulting in .quickly wearing away theshoulders. Others have used parallel rollers and formed collars andgrooves intermediate the ends of the rollers, making it necessary to utwo or three-pieceboxings or bushings.

-Othershav formed vertical collars at the outer ends of the rollers and.vertical shoulders on the v bushings, doing away'with the frame iorcai'rying the rollers and using grooves as guides. The vertical collarsbind the ends of the rollers and retard their movement, the collars wearaway, and therollersdo not lie parallel to the journal. As yet, no meanshas been provided for com- I pletely'overcoming this difliculty. '1 havefound that-"a frame sufficiently rigid can be, constructed/oi a tubewith thin' walls throughwhicu set, audthe jo'urnals could on;

use of washers at their outer ends to take up wear.

In my improved construction hereinafterdescribed, I employ plain rollerswith round ends, a horizontal boxing having a beveledshoulder butwithout grooves termediate collars, and a beveled collar at'the end ofthe rollers. The frame which supports and carries the beveled collar andbeveled shoulder.

Reference is to be had tothe accompanying drawing forming a part of thisspecification, in which similarcharacters of reference indicatecorresponding parts in all the figures, in which V Figure 1 is a centrallongitudinal section one embodiment of my improved roller bearings; Fig.

a side elevation of the roller supporting frame illustrated in l and 2;Fig. 4 is a transverse section of a modified form of frame, said sectionbeing taken on the line 4.-4 of Fig. 5; Fig.6 is a longitudinal sectionof the frame illustrated .in Fig. 4, said section being taken on theline 55 of Fig. 4; and Figs. 6 and 7 are views form.

'In Figs. 1 and 2 I have illustrated a device embodying my invention,there being provided a'spindle 10 having a shoulder llintegral therewithand against which rests a collar 12 forming one end oi the boxing forthe bearing. Adjacent this collar is a second collar 13 having acylindrical bearing surface and an outwardly beveled shoulder 14. Attheouter end of the spindle is a third collar 15 somewhat similar to thecol- -inwardly. beveled shoulder 16. r

Surrounding. the spindle are two telescoping tubes 17 and 18, each ofwhich terminatesin a shoulder 19 coninner bearing surface, and adjacentthe juncture of the bearings 20 and the shoulders 19 are located beveledshoulders 21 and 22 lying substantially parallel to the slioulde rs 14and 16 of the two collars l3 and 15.

Surrounding the cylindrical bearing suriaces oi the collars 13 and 15and in engagement with the inner cylindrical bearing surface ofthe.boxings 20, I provide .a plurality of rollers 23 having cylindricalbearing surfaces and rounded or hemispherical ends. Each mllw orcollars, a horizontal bushing without grooves or in rollers lies on theopposite side of the roller from said- I 75 similar to 4 and 5, butshowing a second modified lar '13 and having a cylindrical bearingsurface and an nected to a boxing 20. This boxing has a cylindrical.

rollers, and that the rollers could be advanced by the2isatransverseseetionontheline 22of Ih'g. 1;Fig.3is

is provided with a journal box extending into the center of each end,and by means of these journal boxes the rollers are spaced and supportecIn the prelerred form of my roller supporting frame, 1' employ a tube 21- having the ends thereof cylindrical and the intermediate portionconical, whereby-one cylindrical end 25 is substantiallylarger than theopposite cylindrical end 26. The tapered or conical portion of the tubeis provided witha plurality of perforations, each of which is slightlywider than the diameter of one of the rollers, and. the length of theseperforations, as well as the distance between the endcylindrical-portions 25 and 2G, issubstantially equal to the length ofthe rollers. 'lhelarger cylindrical end portidn'25 is su'llicientlylarge to lie outside of the journal boxesa't one end 'of the rollers,while the smaller cylindrical end portion 26 is of a diameter to liewithin the row of journal boxes at the opposite end of the rollers. Thestrips 27 connecting the two cylindrical end portions and which lieintermediate the perforations, extend diagonally from the largercylindrical end portion 25 to the smaller cylindrical end portion 26.Two annuli 28 of: the same size and diameter are provided, and each ofthese has a plurality of journals 29 extendinglongitudinally of one edgeand spaced the same distance apart as the centers of the perforations inthe tube 24. These journalsare adapted to fit the journal boxes'in theends ol the rollers, and one of the annuli fits within the cylind ricalend portion25 of the tube and is riveted thereto,

' while the other annuli surrounds the smaller cylindrical end portion26 and is riveted thereto. The journals on one annulus are in alinementwith those on the other and are located adjacent the center of theperforations of the tube 24. It will thus be noted that the rollers aresupported by the'tw -annuli and the journals carried thereby, and 'theannuli areheld rigid and in their proper .position by the tube 24,0neend of which is; se-

cured. to the outer surfacev of one annulus, while the other end issecured. to the inner surface of theother annulus.

As the beveled shoulder 14 on the collar 13 contacts with the end of theroller on one side of the journal boxes, while the beveled shoulder 21on the boxing 20 contacts with the end of the roller on the oppositeside of the journal boxes, and the cylindrical end portions 25-and 26are located on the opposite sides of the journal boxes from the beveledcollars, it will be noted that they are entirely free fromthese'beveledcollars, yet, at

l the same time, rigidly support the annuli and journals.

The annuli need not be made of a thickness greater than the journals,and, therefore, the shoulders 14 and 21. mayextend nearly halfway acrossthe end of the roller, in other words, up to the journal of the roller,while as the cylindrical end portions 25 and 26 of the tube 24 are onthe opposite sides of the journals from the beveled shoulders, it isevident that they may be made as thick and as strong as desired withoutlimiting-the end area of the roller or sacrilicin g the end bearingsurface. I

' The-collar IShaving the bet eled shoulder 16, is preferablylongitudinally movable upon the end of the spindle 10, whereby as theendsof the rollers and the beveled shoulders wear away,'the collar 'maybe moved along the spindle a short distance and hold the parts in theirproper position at'all times. Any suitable" packrings may be insertedbetween ing rings, not shown, may be insertedbetween-the end The tubes17 and 18 being free to move longitudinally in respect to each other,the improved device above described may be employed with wheels havinghubs of various lengths. In the use/oi this device the tubes 17 and 18would be telescoped until the shoulders it) come into engagement withthe opposite ends of the hub to firmly bind the same, and thenece'ssarypacking portion 30 of the boxing. I

In larger bearings in which the diameter of the um.

is sufliciently great to present ample end thrust. l not? if desired,employ the form of supporting frame lll'us.

trated in Figs. 4 and 5. This frame is similar to the the nut 31 and theend frame above described, save that the journals 29 are formed integralwith the larger cylindrical end portion 25 instead of being carried byanann ulus, whilev the jou rnals at the smaller end are carried by anannulus fitin the form above described.

In .I igs. 6 and 7 the intermediate portion of the supporting frame iscylindrical rather than conical in lorm, and both of the annuli 28 aresecured to the outer surface of the cylindrical end portions rather ihauone being secured to the outer surface and the other to the insaidbearing surfaces"against'whicli the ends of the rollers may contact:

Havingth'ixs described my'invention, I claim as new and desire to secureby Letters Patent:

1. In combination, a plurality of rollers, two annular members, oneadjacent each end of said rollers, journals carried by said members .andin engagement with said rollers, and meansin engagement with the outersurface of one of said members and the inner surl'zlee, of the othermember for spacing the members and holding them in position.

2.'In combination, a plurality of rollers, nn annulus having journalsintegral therewith and in engagement with one, end of each of saidrollers, 11 second annulus having joilrnals integral therewith and inengagement with the opposite end of-eacll of said rollers, and meansconnecting said annull and in engagement with the outer surfuce of oneand the inner surface 01' the other.

3. In combination, a plurality of rollers, an annular member havingjournals in engagement with one end of each of sold rollers, a secondannular member having journals ln'engugement with the opposite end oreach of said rollers, and means connecting snld annull and in engagementwith the outer surface of one of them.

4. In combination, a plurality of rollers, anannula me mber'jlmvtngJournals in engagement with one end of:

each of said rollers,- a second annular member having journals Inengagement with the opposite end of eucli of sald'rollers, and meansconnecting said annuli and-.ln'

engagement with the inner surface of one of them.

5. In combination, a plurality-of rollers, a tube llavlng cylindricalend portions and perforations intermediate sold and portions, saidperforations being of a width substantlally equal to the diameter of therollers and of a lengtli equal-to the'length of said rollers,:mnulmhmembers carried by said cyllndrlcal portions tllere beingjournah! carried by said-annular members and adapted to enter joornalboxes V port i1 1g the latter. 6. ll: lcombinatiom tor.

drieal bearin'g'surtncesfand rounded ends, aflidhe" having [cylindricaland 'pprt'lo'nsfand a conical' intefiiiediate porflop; 'andjournals;carried by; nlld gjlindrlcal ,end" ar-1 j.tlons;-Io'r supporting therollers." 1 I 1 v In' cornbifi 'tion a plurality. rol ",1 having;

intermediate jportion provid 'ith perroriit ionsfthroag which: saidrollers extend; and "journal! shppor ted adjnben the cylindrioal" endportions tor 'coacting withto "support the-latter.

cylindrical end portions and a oonioali intermedinte porportjaidrollers. p in v 9. In combinnt n a i'plnralijzyiot rollers, each having"a ey'lindricahbody portion and rounded rend portions", .a

end portions and: provided with journals adapted to sup- 1 tube havingcylindrical end portions-and conical inter mediate portionprovided'vviiii perforations Ithrongh which\ I said rollers extend,and'an annulus sec'nred iio one 0! id cylindrical endportions andprovldegl'wlth Jonrnais'ndapted to support said rollers. 3 1

,' 10. In combination, a plurality dlcylindrioal rollers,

'snpp'orting frame comprising a tube having -cy' lindrical end portionsand a conical-intermediate portion, an onnnlns snrroundlng one of .saidcylindrical and portions, an anf' nnlu s withinlthe-othercvlindricai endportion, and journals carriedhysaid; annull tor snpporting said rollers.

cylindrical-Jody portion and rounded .end portions, a supporting rramecomprising a; tube having cylindrical end .portions'."a'nd "a conicalintermediate portion, an annulus snrronnding one of saideyiindrical-endportions, an annuarrledhy said annnlijor supporting siid rollersli 12.In combination, ficollnr-hhvingifylindrical hearing surface and ojevpled shoulder, a boxlng having an interlor jcylindri'cal beiringwrtaceanda, beveled shoulder oppositely-disposed :the flrtlnieh'tionedbeveledshoulder, aplurallty of rollers. lntermedia tesnid ficollar and boxing""andLhavlng rounded ena$ ori m' -eonacun with said 'peveied'-shouldersl 'a, supporting-jirain e 101- said rollers, comprising a'tiib e.having' cylindrical end portions and a conicalinterniediatepori'ion; 'haidingrm'ediate portion beingz provided mn'perforations; 'throngh which -rsaid "rollers extend, ,an annnlussnrronnne otsaid cylindrical; end portions ja secondlannnlu within -the other"cylindrical end portion, and journals-thri led by said annuli forsuppor ting's'aid rollers'ri t In testimony-whereof "I jlmvesigned niyname to, this =speificationlin1the presence-bf two-subscribingwitnesses.

' v Witnesses:

,En'mpn 'iflTnomrson,

Hnnnr M. Donn;

.l'ns",withln the other cyllndrioal enfiporizion, and Journal! 11, In"combination, a plurality of rollers, each having a

